Any vessel 79 feet in length or greater, except for military and recreational vessels

Requires:

Regulations require that vessels minimize graywater discharges to water, particularly near shore, and that discharges do not contain excessive levels of oils, phosphates, or other materials that can damage coastal ecosystems.

Any discharge of locomotive coolant falls under the rules that apply to the discharge of any industrial wastewater.

Requires:

Wastewater discharged from locomotive cooling systems must be hauled to an appropriate treatment facility, or a permit must be obtained, either from local authorities to discharge to a municipal sewer system, or from the EPA to discharge directly to the environment.